Bar fixing device and bar sintering equipment

Abstract

The utility model relates to a bar fixing device which is used for fixedly installing a bar and comprises a base, a fixing device and a fixing device. The supporting piece is arranged on the base; the top cover is connected to the supporting piece and is arranged opposite to the base; the top cover is provided with a plurality of first positioning holes used for allowing the bars to penetrate through. The limiting piece is connected to the supporting piece and located between the base and the top cover; the limiting piece is provided with a plurality of second positioning holes used for allowing the bars to penetrate through, and the multiple second positioning holes are opposite to the multiple first positioning holes in a one-to-one mode. According to the bar fixing device, the bar can be kept in a vertical arrangement state, uneven heating of the bar during sintering is avoided, and therefore the risk that the bar is bent and deformed after being sintered is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fixing devices, in particular to a bar fixing device and a bar sintering device. Background Art

[0002] Casting is a metal hot working process in which solid metal is melted into liquid and poured into a casting cavity with a specific shape, and then cooled and solidified to form a shape. However, due to the high melting point of high-melting-point metals, the melting temperature is relatively high, and it is difficult to form a fluid, which affects pouring and forming. Therefore, the casting process is usually not used when manufacturing high-melting-point metal bars, but the powder metallurgy process is used.

[0003] Powder metallurgy is a process technology that uses metal powders as raw materials and manufactures metal materials, composite materials, and various types of products through forming and sintering. Currently, the commonly used sintering methods are vertical melting sintering and intermediate frequency furnace sintering. Among them, the main steps of intermediate frequency furnace sintering are: vertically placing the bar into the furnace chamber of the intermediate frequency sintering furnace, and then sintering under a protective atmosphere. However, the above sintering methods have the following disadvantages: In the industry, bars are often manually placed vertically into the intermediate frequency sintering furnace one by one. However, the manual control of the operator easily causes the bars to tilt, resulting in uneven heating of the bars in the intermediate frequency sintering furnace, thereby causing the sintered bars to bend and reducing the yield rate of production. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a bar fixing device to solve the problem that the bars are prone to tilt when manually placed into the intermediate frequency sintering furnace, resulting in uneven heating of the bars and bending deformation.

[0005] A bar fixing device for fixedly installing a bar, the bar fixing device comprising:

[0006] A base;

[0007] A support member disposed on the base;

[0008] A top cover connected to the support member and disposed opposite to the base; the top cover is provided with a plurality of first positioning holes for the bar to pass through; and,

[0009] A limiting member connected to the support member and located between the base and the top cover; the limiting member is provided with a plurality of second positioning holes for the bar to pass through, and the plurality of second positioning holes are in one-to-one correspondence with the plurality of first positioning holes.

[0010] In one embodiment, the support member is vertically disposed on the base, the top cover is parallel to the base, and the limiting member is parallel to the base and the top cover.

[0011] In one embodiment, the shapes of the first positioning hole and the second positioning hole are the same as the cross-section of the rod; and the sizes of the first positioning hole and the second positioning hole are the same.

[0012] In one of the embodiments, the top cover is provided with a hanging member, and the hanging member is arranged on a side of the top cover away from the base.

[0013] In one embodiment, a plurality of the first positioning holes are evenly distributed on the top cover and are located outside the connection area between the top cover and the support member; a plurality of the second positioning holes are evenly distributed on the limiting member and are located outside the connection area between the limiting member and the support member.

[0014] In one of the embodiments, the rod fixing device includes a plurality of limit members, the plurality of limit members are connected to the support member, and are sequentially spaced apart along the axial direction of the support member; and the second positioning holes on the plurality of limit members are opposite to each other.

[0015] In one embodiment, the diameters of the top cover, the base, and the plurality of limiting members are equal, and the edges of the top cover, the base, and the plurality of limiting members are aligned in the vertical direction.

[0016] In one embodiment, the top cover is provided with a first through hole, and the limiting member is provided with a second through hole opposite to the first through hole; the supporting member has a first end and a second end along the axial direction, the supporting member passes through the second through hole and is connected to the limiting member, the first end abuts against the base, and the second end is inserted into the first through hole.

[0017] In one embodiment, the support member is integrally formed with the top cover, the limiting member and the base.

[0018] A rod sintering device comprises the rod fixing device as described above and a sintering furnace, wherein the rod fixing device is arranged in the furnace of the sintering furnace.

[0019] The above-mentioned rod fixing device includes a base, a support member, a top cover and a limit member. The support member is arranged on the base, the top cover is connected to the support member and arranged opposite to the base, and the limit member is connected to the support member and arranged between the base and the top cover. By opening a plurality of first positioning holes for the rods to pass through on the top cover, and opening a plurality of second positioning holes for the rods to pass through on the limit member, and the plurality of first positioning holes and the plurality of second positioning holes are opposite to each other, the rod can pass through the first positioning holes and the second positioning holes and abut one end against the base, so that the rod can maintain a vertical setting state in the above-mentioned rod fixing device, avoiding uneven heating of the rod when sintering in the medium frequency sintering furnace, thereby reducing the risk of bending and deformation of the rod after sintering. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structural schematic diagram of a bar fixing device provided for this application.

[0021] Figure 2 The front view schematic diagram of a bar fixing device provided for this application.

[0022] Figure 3 The top view schematic diagram of a bar fixing device provided for this application.

[0023] Reference numerals: 10, base; 20, support member; 30, top cover; 31, first positioning hole; 40, limiting member; 41, second positioning hole; 50, lifting member. Detailed implementation manners

[0024] To make the above objects, features and advantages of this application more obvious and understandable, the following will describe the detailed implementation manners of this application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0026] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this application, unless otherwise clearly defined or limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly defined or limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation manner.

[0030] Refer to Figure 1 and Figure 2 , Figure 1 shows a schematic structural view of a bar fixing device in an embodiment of the present application, Figure 2 shows a front view schematic of a bar fixing device in an embodiment of the present application. The bar fixing device provided by an embodiment of the present application includes a base 10, a support member 20, a top cover 30 and a limiting member 40. The support member 20 is disposed on the base 10; the top cover 30 is connected to the support member 20 and is disposed opposite to the base 10; the limiting member 40 is connected to the support member 20 and is located between the base 10 and the top cover 30. The base 10, the top cover 30 and the limiting member 40 are connected together through the support member 20 to form the main structure of the bar fixing device.

[0031] In some embodiments, the support member 20 is vertically disposed on the base 10, the top cover 30 is disposed parallel to the base 10, and the limiting member 40 is disposed parallel to the base 10 and the top cover 30. This is beneficial to improving the structural stability of the bar fixing device.

[0032] In some embodiments, the distance between the top cover 30 and the base 10 in the vertical direction is greater than the length of the bar. The top cover 30 is provided with a plurality of first positioning holes 31 for the bar to pass through; the limiting member 40 is provided with a plurality of second positioning holes 41 for the bar to pass through. The diameters of the plurality of first positioning holes 31 and the plurality of second positioning holes 41 are all greater than the diameter of the bar. The plurality of first positioning holes 31 and the plurality of second positioning holes 41 are in one-to-one correspondence, that is, the number of the first positioning holes 31 provided on the top cover 30 is the same as the number of the second positioning holes 41 provided on the limiting member 40, and each first positioning hole 31 on the top cover 30 corresponds to a second positioning hole 41 on the limiting plate.

[0033] It can be understood that before the bar is sintered, the bar can be made to pass through the first positioning hole 31 and the second positioning hole 41 in sequence by means of manual or mechanical clamping, etc., and one end abuts against the upper surface of the base 10. That is to say, the bar passes through the top cover 30 and the limiting member 40, so that the bar can be kept in a vertically disposed state in the bar fixing device, and then the bar fixing device carrying the bar is placed into the intermediate frequency sintering furnace. Thus, the above-mentioned bar fixing device can prevent the bar from tilting in the intermediate frequency sintering furnace, thereby avoiding the situation of uneven heating of the bar during the sintering process and reducing the risk of bending deformation of the bar after sintering. In addition, the above-mentioned bar fixing device can accommodate multiple bars at the same time, and can be placed into the intermediate frequency sintering furnace or taken out from the intermediate frequency sintering furnace at one time by means of an electric hoist, etc., with convenient operation, which is beneficial to improving the production efficiency of the bar. The bar fixing device provided in the present application is applicable to the sintering process of high melting point metal bars. High melting point metals generally refer to metals with a melting point higher than 1535 °C; for example, it is applicable to the sintering process of tungsten bars. In addition to tungsten bars, it is also applicable to the sintering processes including but not limited to molybdenum bars, niobium bars, tantalum bars, vanadium bars, etc.

[0034] In some embodiments, the shapes of the first positioning holes 31 and the second positioning holes 41 are the same as the shape of the cross-section of the bar. When cylindrical bars need to be prepared, as Figure 1 shown, the first positioning holes 31 and the second positioning holes 41 in the bar fixing device are both circular holes. When square bars need to be prepared, the first positioning holes 31 and the second positioning holes 41 in the bar fixing device are both square holes, and this is not limited thereto. And the sizes of the first positioning holes 31 and the second positioning holes 41 are the same, which helps to reduce the possibility of the bar swinging or tilting.

[0035] In some embodiments, a plurality of first positioning holes 31 are evenly disposed on the top cover 30 and are located outside the connection area between the top cover 30 and the support member 20; that is, except for the area where the top cover 30 is connected to the support member 20, a plurality of first positioning holes 31 are provided at uniform intervals on the top cover 30. A plurality of second positioning holes 41 are evenly disposed on the limiting member 40 and are located outside the connection area between the limiting member 40 and the support member 20; that is, except for the area where the limiting member 40 is connected to the support member 20, a plurality of second positioning holes 41 are provided at uniform intervals on the limiting member 40.

[0036] In some embodiments, the bar fixing device includes a plurality of limiting members 40, and the plurality of limiting members 40 are respectively connected to the support member 20 and are sequentially arranged at intervals along the axial direction of the support member 20. The plurality of limiting members 40 are arranged in parallel with each other, and the second positioning holes 41 on the plurality of limiting members 40 are opposite to each other one by one; that is, the number of second positioning holes 41 provided on each limiting member 40 is the same, and each second positioning hole 41 on the limiting plate corresponds to a second positioning hole 41 on another limiting plate. By arranging a plurality of limiting members 40 at intervals along the length direction of the support member 20 itself, the bar can be restricted by a plurality of second positioning holes 41, reducing the risk of deformation of the bar during the high-temperature sintering process, and also being beneficial to reducing the offset of the bar, thereby reducing the risk of the bar tilting and causing uneven heating in the intermediate-frequency sintering furnace and bending.

[0037] Please refer to Figure 3 , Figure 3 FIG. shows a top view schematic diagram of the bar fixing device in an embodiment of the present application. In some embodiments, the top cover 30, the base 10, and the plurality of limiting members 40 have the same diameter, and the edges of the top cover 30, the base 10, and the plurality of limiting members 40 are aligned in the vertical direction; that is, the orthographic projection of the top cover 30 in the vertical direction coincides with the base 10 and each limiting member 40. This is beneficial to improving the structural stability of the bar fixing device, making the structure of the bar fixing device more compact, reducing the floor area of the bar fixing device in the intermediate-frequency sintering furnace, and being beneficial to effectively utilizing the space in the intermediate-frequency sintering furnace.

[0038] In some embodiments, the top cover 30 is provided with a first through hole (not shown in the figure), and the limiting member 40 is provided with a second through hole (not shown in the figure), and the second through hole is disposed opposite to the first through hole; the support member 20 has a first end and a second end along the axial direction, the support member 20 passes through the second through hole and is connected to the limiting member 40; the first end of the support member 20 abuts against the center of the base 10, and the second end of the support member 20 is inserted into the first through hole.

[0039] In some embodiments, the top cover 30 includes at least two first sub - plates. The at least two first sub - plates are connected end to end at the outer wall of the support member 20 to enclose a first through - hole. The surface of each first sub - plate facing the support member 20 abuts against the outer wall of the support member 20; the surface of the top cover 30 facing away from the limiting member 40 is flush with the end face of the second end of the support member 20. The limiting member 40 includes at least two second sub - plates. The at least two second sub - plates are connected end to end at the outer wall of the support member 20 to enclose a second through - hole. The surface of each second sub - plate facing the support member 20 abuts against the outer wall of the support member 20; the top cover 30 and the limiting member 40 are arranged at intervals along the length direction of the support member 20 itself. The surface of the base 10 facing the limiting member 40 abuts against the end face of the first end of the support member 20.

[0040] In some embodiments, the support member 20, the top cover 30, the limiting member 40 and the base 10 are integrally formed, which is beneficial to improving the structural stability and strength of the bar fixing device, ensuring the safety of the bar fixing device during use, and reducing the risk of damage caused by fatigue at the joints.

[0041] In some embodiments, the support member 20 is arranged in a solid columnar or hollow cylindrical structure. When the support member 20 is in a solid columnar structure, the bar fixing device can bear a large load. When the support member 20 is in a hollow cylindrical structure, the overall weight of the bar fixing device can be reduced, thereby reducing the difficulty of moving and placing the bar fixing device into the intermediate - frequency sintering furnace for the sintering process. In this embodiment, the support member 20 is a cylinder; in other embodiments, the support member 20 can also be arranged as a square column, so it is not limited thereto.

[0042] In some embodiments, the bar fixing device includes a plurality of support members 20. The plurality of support members 20 are vertically arranged on the base 10 and are evenly arranged along the circumferential direction of the outer end of the base 10, which can effectively disperse the load, increase the structural stability of the bar fixing device, avoid excessive local stress, reduce the risk of damage to the bar fixing device, and extend the service life of the bar fixing device.

[0043] In some embodiments, the bar fixing device further includes a lifting member 50 disposed on the side of the top cover 30 facing away from the limiting member 40. In this embodiment, the lifting member 50 is an arc-shaped lifting ring; the arc-shaped lifting ring straddles above the first through hole of the top cover 30, and the arc-shaped lifting ring has a first end and a second end. The first end of the arc-shaped lifting ring is disposed on one side of the first through hole on the top cover 30, and the second end of the arc-shaped lifting ring is disposed on the other side of the first through hole on the top cover 30. In other embodiments, the lifting member 50 includes, but is not limited to, a ring bolt, a hook, a lifting belt, a sling or a lifting lug, etc., and thus is not limited thereto. In some embodiments, the lifting member 50 and the top cover 30 are integrally formed. The intermediate frequency sintering furnace generally has an open top. At present, it is difficult to manually place heavy metal bars into the furnace chamber of the intermediate frequency sintering furnace from the top of the intermediate frequency sintering furnace. By providing the lifting member 50 at the top cover 30, the lifting equipment can lift the bar fixing device through the lifting member 50, so as to place the bar fixing device into the intermediate frequency sintering furnace or take it out of the intermediate frequency sintering furnace, reducing the operation difficulty of placing the bar into the intermediate frequency sintering furnace and effectively improving the production efficiency.

[0044] In this embodiment, the base 10, the top cover 30 and the limiting member 40 are all circular plate-like structures; in other embodiments, the base 10, the top cover 30 and the limiting member 40 can also be set as square plate-like structures or other special-shaped plate-like structures, and thus are not limited thereto. In some embodiments, the materials of the base 10, the top cover 30, the limiting member 40, the support member 20 and the lifting member 50 are all zirconia ceramics, so that the bar fixing device can maintain sufficient mechanical strength during the high-temperature sintering process, is not easily deformed or damaged, and thus ensures the reliability and stability of the bar fixing device during the sintering process.

[0045] During use, the bar to be sintered is vertically inserted into the first positioning hole 31 of the top cover 30, so that the bar passes through the second positioning hole 41 of the limiting member 40 and one end abuts against the surface of the bottom plate facing the limiting member 40; after the bar fixing device loads the bar, the lifting equipment is used to lift the bar fixing device and place it into the intermediate frequency sintering furnace for the sintering process; after sintering is completed, the bar fixing device is lifted out of the intermediate frequency sintering furnace by the lifting equipment, and the operator can sequentially take out the sintered bars from the bar fixing device. The operation is simple, time-saving and labor-saving.

[0046] The bar fixing device provided by the present application, on the one hand, enables the bar to maintain a vertical setting state, avoiding uneven heating of the bar during sintering in the intermediate frequency sintering furnace, reducing the risk of bending deformation of the bar after sintering, reducing the defective rate, and increasing the yield rate; on the other hand, by cooperating with a lifting device and a lifting member 50, the bar fixing device loaded with bars can be placed into or taken out of the intermediate frequency sintering furnace, with simple operation, time-saving and labor-saving, solving the problem that it is time-consuming, labor-intensive and difficult to operate when manually placing the bars into the intermediate frequency sintering furnace at present, and being beneficial to improving production efficiency.

[0047] The present application also provides a bar sintering device, including the bar fixing device as described above and a sintering furnace, and the bar fixing device is arranged in the hearth of the sintering furnace. The sintering furnace includes, but is not limited to, an intermediate frequency sintering furnace or a vacuum induction sintering furnace, etc.

[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0049] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A bar fixing device for fixedly installing a bar, characterized in that, The bar fixing device comprises: Base; A support member, disposed on the base; A top cover is connected to the support member and is arranged opposite to the base; the top cover is provided with a plurality of first positioning holes for the rods to pass through; and, A limiting member is connected to the supporting member and is located between the base and the top cover; the limiting member is provided with a plurality of second positioning holes for the rods to pass through, and the plurality of second positioning holes are opposite to the plurality of first positioning holes one by one.

2. The bar fixing device according to claim 1, characterized in that, The support member is vertically arranged on the base, the top cover is arranged parallel to the base, and the limiting member is arranged parallel to the base and the top cover.

3. The bar fixing device according to claim 1, characterized in that, The shapes of the first positioning hole and the second positioning hole are the same as the shape of the cross section of the rod; the sizes of the first positioning hole and the second positioning hole are the same.

4. The bar fixing device according to claim 1, characterized in that, The top cover is provided with a hanging piece, and the hanging piece is arranged on a side of the top cover away from the base.

5. The bar fixing device according to claim 1, characterized in that, A plurality of the first positioning holes are evenly distributed on the top cover and are located outside the connection area between the top cover and the support member; a plurality of the second positioning holes are evenly distributed on the limiting member and are located outside the connection area between the limiting member and the support member.

6. The bar fixing device according to claim 1, characterized in that, The rod fixing device comprises a plurality of limit members, which are connected to the support member and are sequentially spaced apart along the axial direction of the support member; the second positioning holes on the plurality of limit members are opposite to each other.

7. The bar fixing device according to claim 6, characterized in that, The top cover, the base, and the plurality of limiting members have equal diameters, and the edges of the top cover, the base, and the plurality of limiting members are aligned in the vertical direction.

8. The bar fixing device according to claim 1, characterized in that, The top cover is provided with a first through hole, and the limiting member is provided with a second through hole opposite to the first through hole; the supporting member has a first end and a second end along the axial direction, the supporting member passes through the second through hole and is connected to the limiting member, the first end abuts against the base, and the second end is inserted into the first through hole.

9. The bar fixing device according to claim 8, characterized in that, The support member, the top cover, the limiting member and the base are integrally formed.

10. A bar sintering device, characterized in that, It comprises a rod fixing device as described in any one of claims 1 to 9 and a sintering furnace, wherein the rod fixing device is arranged in the furnace of the sintering furnace.

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